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New Sylvania HPS Lamp Suitable for both the growing & the blooming phase

The Sylvania 400W GroXpress lamp is the ideal solution for all kinds of growers at an affordable price. The lamp stands out not only for the high quality of the materials used, but also for the manufacturing and quality control processes, guaranteeing the bulb's performance and reliability.

GroXpress is optimized for high Phytolumens and its light spectrum maximizes red output which is essential for plant growth.

How to run this 400 watts Hps Bulb:These high preasuure sodium bulbs need a high-voltage discharge to light up and therefore need a Hps power supply of the same wattage (400w). It is also advised to purchase an e40 reflector that optimizes the light refraction